From: Michał Mirosław Date: Mon, 10 Aug 2020 04:33:32 +0000 (+0200) Subject: regulator: remove locking around regulator_notifier_call_chain() X-Git-Tag: v5.10.7~1142^2~34^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e9c142b0d2c08178a9e146d47d8fe397373bda3e;p=platform%2Fkernel%2Flinux-rpi.git regulator: remove locking around regulator_notifier_call_chain() regulator_notifier_call_chain() doesn't need rdev lock and rdev's existence is assumed in the code anyway. Remove the locks from drivers. Signed-off-by: Michał Mirosław Acked-by: Adam Thomson Reviewed-by: Dmitry Osipenko Link: https://lore.kernel.org/r/42393f66dcc4d80dcd9797be45216b4035aa96cb.1597032945.git.mirq-linux@rere.qmqm.pl Signed-off-by: Mark Brown --- diff --git a/drivers/regulator/da9055-regulator.c b/drivers/regulator/da9055-regulator.c index c025ccb..73ff5fc7 100644 --- a/drivers/regulator/da9055-regulator.c +++ b/drivers/regulator/da9055-regulator.c @@ -485,10 +485,8 @@ static irqreturn_t da9055_ldo5_6_oc_irq(int irq, void *data) { struct da9055_regulator *regulator = data; - regulator_lock(regulator->rdev); regulator_notifier_call_chain(regulator->rdev, REGULATOR_EVENT_OVER_CURRENT, NULL); - regulator_unlock(regulator->rdev); return IRQ_HANDLED; } diff --git a/drivers/regulator/da9062-regulator.c b/drivers/regulator/da9062-regulator.c index d8112f5..1a63240 100644 --- a/drivers/regulator/da9062-regulator.c +++ b/drivers/regulator/da9062-regulator.c @@ -907,10 +907,8 @@ static irqreturn_t da9062_ldo_lim_event(int irq, void *data) continue; if (BIT(regl->info->oc_event.lsb) & bits) { - regulator_lock(regl->rdev); regulator_notifier_call_chain(regl->rdev, REGULATOR_EVENT_OVER_CURRENT, NULL); - regulator_unlock(regl->rdev); handled = IRQ_HANDLED; } } diff --git a/drivers/regulator/da9063-regulator.c b/drivers/regulator/da9063-regulator.c index fe65b5ac..cf7d534 100644 --- a/drivers/regulator/da9063-regulator.c +++ b/drivers/regulator/da9063-regulator.c @@ -574,10 +574,8 @@ static irqreturn_t da9063_ldo_lim_event(int irq, void *data) continue; if (BIT(regl->info->oc_event.lsb) & bits) { - regulator_lock(regl->rdev); regulator_notifier_call_chain(regl->rdev, REGULATOR_EVENT_OVER_CURRENT, NULL); - regulator_unlock(regl->rdev); } } diff --git a/drivers/regulator/da9210-regulator.c b/drivers/regulator/da9210-regulator.c index 2aea442..7493af0 100644 --- a/drivers/regulator/da9210-regulator.c +++ b/drivers/regulator/da9210-regulator.c @@ -77,8 +77,6 @@ static irqreturn_t da9210_irq_handler(int irq, void *data) if (error < 0) goto error_i2c; - regulator_lock(chip->rdev); - if (val & DA9210_E_OVCURR) { regulator_notifier_call_chain(chip->rdev, REGULATOR_EVENT_OVER_CURRENT, @@ -103,8 +101,6 @@ static irqreturn_t da9210_irq_handler(int irq, void *data) handled |= DA9210_E_VMAX; } - regulator_unlock(chip->rdev); - if (handled) { /* Clear handled events */ error = regmap_write(chip->regmap, DA9210_REG_EVENT_B, handled); diff --git a/drivers/regulator/da9211-regulator.c b/drivers/regulator/da9211-regulator.c index cffcefd..e01b32d 100644 --- a/drivers/regulator/da9211-regulator.c +++ b/drivers/regulator/da9211-regulator.c @@ -346,10 +346,8 @@ static irqreturn_t da9211_irq_handler(int irq, void *data) goto error_i2c; if (reg_val & DA9211_E_OV_CURR_A) { - regulator_lock(chip->rdev[0]); regulator_notifier_call_chain(chip->rdev[0], REGULATOR_EVENT_OVER_CURRENT, NULL); - regulator_unlock(chip->rdev[0]); err = regmap_write(chip->regmap, DA9211_REG_EVENT_B, DA9211_E_OV_CURR_A); @@ -360,10 +358,8 @@ static irqreturn_t da9211_irq_handler(int irq, void *data) } if (reg_val & DA9211_E_OV_CURR_B) { - regulator_lock(chip->rdev[1]); regulator_notifier_call_chain(chip->rdev[1], REGULATOR_EVENT_OVER_CURRENT, NULL); - regulator_unlock(chip->rdev[1]); err = regmap_write(chip->regmap, DA9211_REG_EVENT_B, DA9211_E_OV_CURR_B); diff --git a/drivers/regulator/lp8755.c b/drivers/regulator/lp8755.c index 8cc9963..13c5357 100644 --- a/drivers/regulator/lp8755.c +++ b/drivers/regulator/lp8755.c @@ -329,11 +329,9 @@ static irqreturn_t lp8755_irq_handler(int irq, void *data) if ((flag0 & (0x4 << icnt)) && (pchip->irqmask & (0x04 << icnt)) && (pchip->rdev[icnt] != NULL)) { - regulator_lock(pchip->rdev[icnt]); regulator_notifier_call_chain(pchip->rdev[icnt], LP8755_EVENT_PWR_FAULT, NULL); - regulator_unlock(pchip->rdev[icnt]); } /* read flag1 register */ @@ -349,22 +347,18 @@ static irqreturn_t lp8755_irq_handler(int irq, void *data) if ((flag1 & 0x01) && (pchip->irqmask & 0x01)) for (icnt = 0; icnt < LP8755_BUCK_MAX; icnt++) if (pchip->rdev[icnt] != NULL) { - regulator_lock(pchip->rdev[icnt]); regulator_notifier_call_chain(pchip->rdev[icnt], LP8755_EVENT_OCP, NULL); - regulator_unlock(pchip->rdev[icnt]); } /* send OVP event to all regulator devices */ if ((flag1 & 0x02) && (pchip->irqmask & 0x02)) for (icnt = 0; icnt < LP8755_BUCK_MAX; icnt++) if (pchip->rdev[icnt] != NULL) { - regulator_lock(pchip->rdev[icnt]); regulator_notifier_call_chain(pchip->rdev[icnt], LP8755_EVENT_OVP, NULL); - regulator_unlock(pchip->rdev[icnt]); } return IRQ_HANDLED; diff --git a/drivers/regulator/ltc3589.c b/drivers/regulator/ltc3589.c index fa563aa..38f7ccb 100644 --- a/drivers/regulator/ltc3589.c +++ b/drivers/regulator/ltc3589.c @@ -357,22 +357,16 @@ static irqreturn_t ltc3589_isr(int irq, void *dev_id) if (irqstat & LTC3589_IRQSTAT_THERMAL_WARN) { event = REGULATOR_EVENT_OVER_TEMP; - for (i = 0; i < LTC3589_NUM_REGULATORS; i++) { - regulator_lock(ltc3589->regulators[i]); + for (i = 0; i < LTC3589_NUM_REGULATORS; i++) regulator_notifier_call_chain(ltc3589->regulators[i], event, NULL); - regulator_unlock(ltc3589->regulators[i]); - } } if (irqstat & LTC3589_IRQSTAT_UNDERVOLT_WARN) { event = REGULATOR_EVENT_UNDER_VOLTAGE; - for (i = 0; i < LTC3589_NUM_REGULATORS; i++) { - regulator_lock(ltc3589->regulators[i]); + for (i = 0; i < LTC3589_NUM_REGULATORS; i++) regulator_notifier_call_chain(ltc3589->regulators[i], event, NULL); - regulator_unlock(ltc3589->regulators[i]); - } } /* Clear warning condition */ diff --git a/drivers/regulator/ltc3676.c b/drivers/regulator/ltc3676.c index 557727b..eb3d6be 100644 --- a/drivers/regulator/ltc3676.c +++ b/drivers/regulator/ltc3676.c @@ -276,23 +276,17 @@ static irqreturn_t ltc3676_isr(int irq, void *dev_id) if (irqstat & LTC3676_IRQSTAT_THERMAL_WARN) { dev_warn(dev, "Over-temperature Warning\n"); event = REGULATOR_EVENT_OVER_TEMP; - for (i = 0; i < LTC3676_NUM_REGULATORS; i++) { - regulator_lock(ltc3676->regulators[i]); + for (i = 0; i < LTC3676_NUM_REGULATORS; i++) regulator_notifier_call_chain(ltc3676->regulators[i], event, NULL); - regulator_unlock(ltc3676->regulators[i]); - } } if (irqstat & LTC3676_IRQSTAT_UNDERVOLT_WARN) { dev_info(dev, "Undervoltage Warning\n"); event = REGULATOR_EVENT_UNDER_VOLTAGE; - for (i = 0; i < LTC3676_NUM_REGULATORS; i++) { - regulator_lock(ltc3676->regulators[i]); + for (i = 0; i < LTC3676_NUM_REGULATORS; i++) regulator_notifier_call_chain(ltc3676->regulators[i], event, NULL); - regulator_unlock(ltc3676->regulators[i]); - } } /* Clear warning condition */ diff --git a/drivers/regulator/pv88060-regulator.c b/drivers/regulator/pv88060-regulator.c index 787ced9..4823884 100644 --- a/drivers/regulator/pv88060-regulator.c +++ b/drivers/regulator/pv88060-regulator.c @@ -233,13 +233,10 @@ static irqreturn_t pv88060_irq_handler(int irq, void *data) if (reg_val & PV88060_E_VDD_FLT) { for (i = 0; i < PV88060_MAX_REGULATORS; i++) { - if (chip->rdev[i] != NULL) { - regulator_lock(chip->rdev[i]); + if (chip->rdev[i] != NULL) regulator_notifier_call_chain(chip->rdev[i], REGULATOR_EVENT_UNDER_VOLTAGE, NULL); - regulator_unlock(chip->rdev[i]); - } } err = regmap_write(chip->regmap, PV88060_REG_EVENT_A, @@ -252,13 +249,10 @@ static irqreturn_t pv88060_irq_handler(int irq, void *data) if (reg_val & PV88060_E_OVER_TEMP) { for (i = 0; i < PV88060_MAX_REGULATORS; i++) { - if (chip->rdev[i] != NULL) { - regulator_lock(chip->rdev[i]); + if (chip->rdev[i] != NULL) regulator_notifier_call_chain(chip->rdev[i], REGULATOR_EVENT_OVER_TEMP, NULL); - regulator_unlock(chip->rdev[i]); - } } err = regmap_write(chip->regmap, PV88060_REG_EVENT_A, diff --git a/drivers/regulator/pv88080-regulator.c b/drivers/regulator/pv88080-regulator.c index a444f68..2a74cc0 100644 --- a/drivers/regulator/pv88080-regulator.c +++ b/drivers/regulator/pv88080-regulator.c @@ -334,13 +334,10 @@ static irqreturn_t pv88080_irq_handler(int irq, void *data) if (reg_val & PV88080_E_VDD_FLT) { for (i = 0; i < PV88080_MAX_REGULATORS; i++) { - if (chip->rdev[i] != NULL) { - regulator_lock(chip->rdev[i]); + if (chip->rdev[i] != NULL) regulator_notifier_call_chain(chip->rdev[i], REGULATOR_EVENT_UNDER_VOLTAGE, NULL); - regulator_unlock(chip->rdev[i]); - } } err = regmap_write(chip->regmap, PV88080_REG_EVENT_A, @@ -353,13 +350,10 @@ static irqreturn_t pv88080_irq_handler(int irq, void *data) if (reg_val & PV88080_E_OVER_TEMP) { for (i = 0; i < PV88080_MAX_REGULATORS; i++) { - if (chip->rdev[i] != NULL) { - regulator_lock(chip->rdev[i]); + if (chip->rdev[i] != NULL) regulator_notifier_call_chain(chip->rdev[i], REGULATOR_EVENT_OVER_TEMP, NULL); - regulator_unlock(chip->rdev[i]); - } } err = regmap_write(chip->regmap, PV88080_REG_EVENT_A, diff --git a/drivers/regulator/pv88090-regulator.c b/drivers/regulator/pv88090-regulator.c index 784729e..a80176b 100644 --- a/drivers/regulator/pv88090-regulator.c +++ b/drivers/regulator/pv88090-regulator.c @@ -226,13 +226,10 @@ static irqreturn_t pv88090_irq_handler(int irq, void *data) if (reg_val & PV88090_E_VDD_FLT) { for (i = 0; i < PV88090_MAX_REGULATORS; i++) { - if (chip->rdev[i] != NULL) { - regulator_lock(chip->rdev[i]); + if (chip->rdev[i] != NULL) regulator_notifier_call_chain(chip->rdev[i], REGULATOR_EVENT_UNDER_VOLTAGE, NULL); - regulator_unlock(chip->rdev[i]); - } } err = regmap_write(chip->regmap, PV88090_REG_EVENT_A, @@ -245,13 +242,10 @@ static irqreturn_t pv88090_irq_handler(int irq, void *data) if (reg_val & PV88090_E_OVER_TEMP) { for (i = 0; i < PV88090_MAX_REGULATORS; i++) { - if (chip->rdev[i] != NULL) { - regulator_lock(chip->rdev[i]); + if (chip->rdev[i] != NULL) regulator_notifier_call_chain(chip->rdev[i], REGULATOR_EVENT_OVER_TEMP, NULL); - regulator_unlock(chip->rdev[i]); - } } err = regmap_write(chip->regmap, PV88090_REG_EVENT_A, diff --git a/drivers/regulator/slg51000-regulator.c b/drivers/regulator/slg51000-regulator.c index 44e4cec..0f80419 100644 --- a/drivers/regulator/slg51000-regulator.c +++ b/drivers/regulator/slg51000-regulator.c @@ -386,10 +386,8 @@ static irqreturn_t slg51000_irq_handler(int irq, void *data) for (i = 0; i < SLG51000_MAX_REGULATORS; i++) { if (!(evt[i][R2] & SLG51000_IRQ_ILIM_FLAG_MASK) && (evt[i][R0] & SLG51000_EVT_ILIM_FLAG_MASK)) { - regulator_lock(chip->rdev[i]); regulator_notifier_call_chain(chip->rdev[i], REGULATOR_EVENT_OVER_CURRENT, NULL); - regulator_unlock(chip->rdev[i]); if (evt[i][R1] & SLG51000_STA_ILIM_FLAG_MASK) dev_warn(chip->dev, @@ -403,10 +401,8 @@ static irqreturn_t slg51000_irq_handler(int irq, void *data) for (i = 0; i < SLG51000_MAX_REGULATORS; i++) { if (!(evt[i][R1] & SLG51000_STA_ILIM_FLAG_MASK) && (evt[i][R1] & SLG51000_STA_VOUT_OK_FLAG_MASK)) { - regulator_lock(chip->rdev[i]); regulator_notifier_call_chain(chip->rdev[i], REGULATOR_EVENT_OVER_TEMP, NULL); - regulator_unlock(chip->rdev[i]); } } handled = IRQ_HANDLED; diff --git a/drivers/regulator/stpmic1_regulator.c b/drivers/regulator/stpmic1_regulator.c index 73e0ab2..cf10fdb 100644 --- a/drivers/regulator/stpmic1_regulator.c +++ b/drivers/regulator/stpmic1_regulator.c @@ -505,15 +505,11 @@ static irqreturn_t stpmic1_curlim_irq_handler(int irq, void *data) { struct regulator_dev *rdev = (struct regulator_dev *)data; - regulator_lock(rdev); - /* Send an overcurrent notification */ regulator_notifier_call_chain(rdev, REGULATOR_EVENT_OVER_CURRENT, NULL); - regulator_unlock(rdev); - return IRQ_HANDLED; } diff --git a/drivers/regulator/wm831x-dcdc.c b/drivers/regulator/wm831x-dcdc.c index ad2203d..e43ed4d9 100644 --- a/drivers/regulator/wm831x-dcdc.c +++ b/drivers/regulator/wm831x-dcdc.c @@ -178,11 +178,9 @@ static irqreturn_t wm831x_dcdc_uv_irq(int irq, void *data) { struct wm831x_dcdc *dcdc = data; - regulator_lock(dcdc->regulator); regulator_notifier_call_chain(dcdc->regulator, REGULATOR_EVENT_UNDER_VOLTAGE, NULL); - regulator_unlock(dcdc->regulator); return IRQ_HANDLED; } @@ -191,11 +189,9 @@ static irqreturn_t wm831x_dcdc_oc_irq(int irq, void *data) { struct wm831x_dcdc *dcdc = data; - regulator_lock(dcdc->regulator); regulator_notifier_call_chain(dcdc->regulator, REGULATOR_EVENT_OVER_CURRENT, NULL); - regulator_unlock(dcdc->regulator); return IRQ_HANDLED; } diff --git a/drivers/regulator/wm831x-isink.c b/drivers/regulator/wm831x-isink.c index ff3d2bf..eade3ae 100644 --- a/drivers/regulator/wm831x-isink.c +++ b/drivers/regulator/wm831x-isink.c @@ -99,11 +99,9 @@ static irqreturn_t wm831x_isink_irq(int irq, void *data) { struct wm831x_isink *isink = data; - regulator_lock(isink->regulator); regulator_notifier_call_chain(isink->regulator, REGULATOR_EVENT_OVER_CURRENT, NULL); - regulator_unlock(isink->regulator); return IRQ_HANDLED; } diff --git a/drivers/regulator/wm831x-ldo.c b/drivers/regulator/wm831x-ldo.c index 7b6cf48..e091b18 100644 --- a/drivers/regulator/wm831x-ldo.c +++ b/drivers/regulator/wm831x-ldo.c @@ -46,11 +46,9 @@ static irqreturn_t wm831x_ldo_uv_irq(int irq, void *data) { struct wm831x_ldo *ldo = data; - regulator_lock(ldo->regulator); regulator_notifier_call_chain(ldo->regulator, REGULATOR_EVENT_UNDER_VOLTAGE, NULL); - regulator_unlock(ldo->regulator); return IRQ_HANDLED; } diff --git a/drivers/regulator/wm8350-regulator.c b/drivers/regulator/wm8350-regulator.c index 2e7bfdf..6579bfd 100644 --- a/drivers/regulator/wm8350-regulator.c +++ b/drivers/regulator/wm8350-regulator.c @@ -1089,7 +1089,6 @@ static irqreturn_t pmic_uv_handler(int irq, void *data) { struct regulator_dev *rdev = (struct regulator_dev *)data; - regulator_lock(rdev); if (irq == WM8350_IRQ_CS1 || irq == WM8350_IRQ_CS2) regulator_notifier_call_chain(rdev, REGULATOR_EVENT_REGULATION_OUT, @@ -1098,7 +1097,6 @@ static irqreturn_t pmic_uv_handler(int irq, void *data) regulator_notifier_call_chain(rdev, REGULATOR_EVENT_UNDER_VOLTAGE, NULL); - regulator_unlock(rdev); return IRQ_HANDLED; }